Home
Class 11
PHYSICS
A wheel rotates with a constasnt acceler...

A wheel rotates with a constasnt acceleration of `2.0rad/s^2`. If the wheel starts from rest, how many evolutions wil it make in the first 10 senconds?

Text Solution

Verified by Experts

The angular displacement in the first 10 seconds is ginven by
`theta=omega_0t+1/2alphat^2=1/2(2.0rad/s^2)(10s)^=10rad`.
As the whel turns by `2pi` radian in each revolution, the number of revolutions in 10 s is
`n=100/(2pi)=16`
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MECHANICS

    HC VERMA|Exercise Short Answer|22 Videos
  • ROTATIONAL MECHANICS

    HC VERMA|Exercise Objective 1|26 Videos
  • ROTATIONAL MECHANICS

    HC VERMA|Exercise Exercises|86 Videos
  • REST AND MOTION : KINEMATICS

    HC VERMA|Exercise Exercises|51 Videos
  • SIMPLE HARMONIC MOTION

    HC VERMA|Exercise Exercises|58 Videos
HC VERMA-ROTATIONAL MECHANICS-Worked Out Examples
  1. A wheel rotates with a constasnt acceleration of 2.0rad/s^2. If the wh...

    Text Solution

    |

  2. The wheel of a motor, accelerated uniformly from rest, rotates through...

    Text Solution

    |

  3. A wheel having moment of inertia 2 kig m^2 about its xis, rotates at 5...

    Text Solution

    |

  4. A string is wrapped around the rim of a wheel of moment of inertia 0.2...

    Text Solution

    |

  5. A wheel of rdius r and moment of inertia I about its axis is fixed at ...

    Text Solution

    |

  6. The pulley shown in figure has a moment of inertia I about it's axis a...

    Text Solution

    |

  7. Two small kids weighing 10 g and 15 kg respectively are tyribg t balan...

    Text Solution

    |

  8. A uniform ladder of mass 10 kg leans against a smooth vertical wall ma...

    Text Solution

    |

  9. The ladder shown in figure has negligible mass and rests on a friction...

    Text Solution

    |

  10. Two small balls A and B each of mass m, are attched erighdly to the en...

    Text Solution

    |

  11. Two particles of mass m each are attached to a light rod of length d, ...

    Text Solution

    |

  12. A particle is projected at time t=0 from a point P wilth a speed v0 at...

    Text Solution

    |

  13. A uniform circulr disc of mass 200 g and radius 4.0 cm is rotated abou...

    Text Solution

    |

  14. A wheel rotating at an angular speed of 20 rad/s ils brought to rest b...

    Text Solution

    |

  15. Two masses M and m are connect by a light string gong over a pulley of...

    Text Solution

    |

  16. Figure shows a mass m placed on a frictionless horizontal table and at...

    Text Solution

    |

  17. A uniform rod of mas m and length l is kept vertical with the lower en...

    Text Solution

    |

  18. Four particles each of mass m are kept at the four corners of a square...

    Text Solution

    |

  19. Two identical spheres each of mass 1.20 kg and radius 10.0 cm are fixe...

    Text Solution

    |

  20. Two uniform identicla rods each of mass M and length l are joined to f...

    Text Solution

    |